1321013011 has 8 divisors (see below), whose sum is σ = 1349637824. Its totient is φ = 1292613120.

The previous prime is 1321012997. The next prime is 1321013041. The reversal of 1321013011 is 1103101231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321013011 - 2²⁷ = 1186795283 is a prime.

It is a super-2 number, since 2×1321013011² = 3490150750462572242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321012982 and 1321013000.

It is not an unprimeable number, because it can be changed into a prime (1321013041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44331 + ... + 67876.

It is an arithmetic number, because the mean of its divisors is an integer number (168704728).

Almost surely, 2^1321013011 is an apocalyptic number.

1321013011 is a deficient number, since it is larger than the sum of its proper divisors (28624813).

1321013011 is a wasteful number, since it uses less digits than its factorization.

1321013011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112461.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1321013011 is about 36345.7426805396. The cubic root of 1321013011 is about 1097.2418533475.

Adding to 1321013011 its reverse (1103101231), we get a palindrome (2424114242).

The spelling of 1321013011 in words is "one billion, three hundred twenty-one million, thirteen thousand, eleven".